男だん女じょ比ひ

noun

sex ratio; gender ratio

Used in demographic, social, or statistical contexts to describe the proportion of males to females in a group.

• この大だい学がくの男だん女じょ比ひはほぼ1対たい1です。

  The gender ratio at this university is almost 1 to 1.

• 出しゅっ生しょう時じの男だん女じょ比ひは自し然ぜん状じょう態たいで約やく105対たい100とされる。

  The sex ratio at birth is said to be about 105 to 100 in natural conditions.